The SMAF includes 29 functions covering five domains of activity (number of items): activities of daily living (7), mobility (6), communication (3), mental functions (5), and instrumental activities of daily living (8).
The KOOS is a 42-item self-administered knee-specific questionnaire assessing pain (9 items), symptoms (7 items), activities of daily living (17 items), sport and recreation function (5 items) and knee-related quality of life (4 items) in five separate subscales (for the KOOS questionnaire see Additional file: 1).
The KOOS is a 42-item self-administered knee-specific questionnaire assessing pain (9 items), symptoms (7 items), activities of daily living (ADL, 17 items), sports and recreation function (5 items) and knee-related quality of life (QOL, 4 items) in five separate subscales.
The KOOS questionnaire covers five dimensions that are reported separately: Pain (nine items), Symptoms (seven items), activities of daily living (ADL, 17 items), sport and function (Sport/recreation, five items), and knee-related quality of life (QoL, four items).
The finalized HFS-36 Chinese version contained 8 subscales, including mobility (items 1-5), activities of daily living (ADL) (items 6-10), emotional well-being (items 11-17), stitems(items 18-22), supportsupport (items 23-25), cognitems (items 26-28), bodily discomfort (items 29-33), and communication (items 34-36).
Four of the factors were related to highly saturated items: 1) "social issues" (16 items); 2) "activities of daily living" (7 items); 3) "emotional issues" (6 items); and 4) "tiredness and fatigue" (5 items), while the fifth factor included the single item 5) "I wake refreshed in the morning".
The KOOS has 5 subscales: Pain (9 items), other symptoms (7 items), activities of daily living (ADL) (17 items), sports and recreational function (Sport/rec) (5 items), and knee-related quality of life (QoL) (4 items).
The Multidimensional Assessment of Fatigue Questionnaire-Modified (MAF) [ 45] is a self-administered 16-item questionnaire that assesses four dimensions of fatigue over the past week: severity (items 1 to 3), impact on activities of daily living (items 4 to 14), and timing (items 15 and 16).
The questionnaire consisted of 11 items analysing pain (5 items), maximum walking distance (2 items) and activities of daily living (4 items).
Consequently, neither upper extremity function items nor disability (in activities of daily living) items were included.
KOOS is a 42-item self-administered knee-specific questionnaire with five subscales: Pain (9 items), Symptoms (7 items), Activities of Daily Living Function (ADL Function, 17 items), Sports and Recreation Function (5 items) and knee-related Quality of Life (QOL, 4 items).
